Question

Calculate the temperature at which a tungsten filament with an
emissivity of 0.35
and a surface area of 2.6 × 10-5 m2 will radiate energy at the rate
of 44 W
in a room where the temperature is 24 degrees C. The
Stephan-Boltzmann constant is 5.6696 × 10-8 W/m2· K4 .